EP2208269B1 - Protection device for protecting against contact with electrical lines in a power distributing unit - Google Patents

Protection device for protecting against contact with electrical lines in a power distributing unit Download PDF

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Publication number
EP2208269B1
EP2208269B1 EP08846356.7A EP08846356A EP2208269B1 EP 2208269 B1 EP2208269 B1 EP 2208269B1 EP 08846356 A EP08846356 A EP 08846356A EP 2208269 B1 EP2208269 B1 EP 2208269B1
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EP
European Patent Office
Prior art keywords
protective plate
unit
electrical
contact
power distribution
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EP08846356.7A
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German (de)
French (fr)
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EP2208269A1 (en
Inventor
Christian Cermann
Mario Schmidt
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Siemens AG
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Siemens AG
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/24—Shutters or guards

Definitions

  • the invention relates to the structural design of a protective device against touching electrical conductors in a power distribution unit, wherein the power distribution unit has an insertion compartment and an electrical insertion unit displaceable in the insertion compartment from an initial position to an end position. This can be removed from the compartment when the system is under tension.
  • a power distribution unit with a slide-in unit in which fixedly fixed contacts in the plug-in unit and in the plug-in unit slidably guided contact units are provided, wherein the displaceably guided contact units in befindlichem in end position plug-in unit from a separation in a contact position can be transferred.
  • contact elements of the displaceably guided contact units in the disconnected position of the contact units contact only the fixed fixed contacts.
  • the contact elements of the contact units slide along the fixedly fixed contacts and additionally come into contact with electrical conductors in the form of busbars (field rails) shown there.
  • the access to the busbars is always open.
  • the invention is based on the object to make the protection even more secure.
  • the actuating means under the action of a control means on the plug-in unit is movable from an initial position to an end position, wherein the actuating means in located in its end position electrical plug-in unit such in the trajectory of the protective plate protrudes that the protective plate on the one hand only when transferring the actuating means from its initial position to its end position from its closed position to its open position and on the other hand only when transferring the actuating means from its end position to its original position from its open Position in its closed position can be transferred.
  • the blocking element which causes the first locking of the protective plate, integrally formed on the protective plate and a stationary held to the insertion compartment stop facing, to cancel the first locking of the protective plate, a breaking out of the blocking element is required.
  • the new protection device can be easily inserted into power distribution units or retrofitted, the one slot and an in the insertion compartment from an initial position in an end position displaceable electrical insertion unit.
  • control means acting on the actuating means may be formed by a serving for moving the contact unit cross slide in a structurally simple manner.
  • the new protection device is in the FIGS. 1 to 24 shown.
  • FIG. 1 shows by way of example a power distribution unit 1 in the form of a control panel of a low-voltage switchgear with five slide assemblies 2, each having a slot 3 in the form of a support plate and an insertable in an insertion direction in the insertion compartment from an initial position to an end position sliding electrical insertion unit 4.
  • handles 6 are rotatably arranged on front walls 5 of the electrical plug-in units 4 .
  • Each of the handles 6 is rotatably connected in a manner not shown with a clutch of a switching shaft of a main switch to turn on and off the main switch can.
  • the uppermost of the slide-in arrangements 2 shown shows a drive unit 8 accommodated in a recess 7 in the region of the front wall 5 in the front part of which a manual slide 9 is movably arranged.
  • the hand slider 9 is in a closed or rest position, in which an underlying access opening is covered.
  • Reference numeral 10 denotes a display panel which indicates the switching state of the main switch. In the example of Figure 1, all main switches are in the off state.
  • the electrical plug-in unit 4 has a plug-in housing 12 with a base plate 13 of the front wall 5, a rear wall 14 and two side walls 15, 16.
  • Reference numeral 17 designates an input-side part of the contact arrangement
  • reference numeral 18 designates an output-side part of the contact arrangement.
  • the contact arrangement has input-side displaceable contact units 19 and output-side displaceable contact units 20 and a means 21 for displacing the contact units 19, 20 in the displacement direction 22.
  • the displacement direction 22 of the contact units when transferring from a disconnected position to a contact position corresponds to the insertion direction of the plug-in unit in the insertion compartment.
  • the contact units 19, 20 and the means 21 for displacing the contact units are constructed substantially as described in the document DE 10 2005 026 388 B3 is described.
  • the production of the electrical connection between the stationary in the plug-in housing 12 arranged contacts 23, 25 and the associated busbars 24, 26 takes place substantially as it is in the document DE 10 2005 026 388 B3 is described.
  • the means 21 for displacing the contact units 19, 20 has two in the electric rack unit transverse racks 29, 30 which are movable via a pinion 31 to the side.
  • pinion 31 can be intervened on the front wall 5 with the operating tool.
  • About Eckumlenkept 32, 33 strips 34, 35 in the direction of displacement 22 and opposite to this direction of displacement 22 moves.
  • a cross slide 36 coupled to the strips 34, 35 then moves correspondingly in the displacement direction 22 and opposite to this displacement direction 22.
  • the contact units 19, 20 are guided by means of the cross slide 36 in the direction of displacement 22.
  • FIGS. 3 and 4 that a section of the FIG. 2 show in the region of the left input side contact unit 19, the cross slide 36 in contrast to the cross slide as he from the DE 10 2005 026 388 B3 is known, lugs 37, 38 which engage in lateral recesses 39, 40 of the bearing body of the contact unit 19.
  • lugs 37, 38 which engage in lateral recesses 39, 40 of the bearing body of the contact unit 19.
  • For easier assembly of the contact elements of the bearing body is formed in each case by two interlocking part body 41, 42, wherein in each of the part body 41, 42, one of the lugs 37, 38 laterally engages.
  • FIGS. 5 to 7 is at the pointing in the direction of insertion 43 side of the trained as a support sheet insertion compartment 3 and that is fixed in front of the input side bus bars 24, a cover 44.
  • the support plate according to the FIG. 8 two upwardly bent fastening tabs 45. These fastening tabs 45 and the cover 44 itself (see. FIG. 10 ) are provided with associated through holes 46, 47.
  • the fixing of the cover 44 is carried out in a simple and secure manner by screws 48 which passing through through holes 46, 47 pass through (see also FIG. 15 ).
  • This grid dimension of 50 mm corresponds to the grid dimension in which plug-in units 3 could be arranged in the power distribution unit 1.
  • the cover 44 for holding the protective plates 49a to 49d hook-like guide elements 50 and lugs 51 wherein the hook-like guide elements 50 of the cover 44 with associated L-shaped cutouts 52 of the protective plates 49a to 49d and the lugs 51 of the cover 44 associated with Snap tabs 53 of the protective plates 49a to 49d cooperate.
  • the attachment of the protective plates 49a to 49d takes place in that first the hook-like guide elements 50 are inserted through the angled wide part of the L-shaped cutouts 52. Subsequently, the protective plates 49a to 49d are moved so far up until the protective plates 49a to 49d their in the FIG.
  • the protective plates can be transferred in the manner of a shutter in an open position, in the first passages 54 of the protective plate 49a and associated second passage openings 55 of the cover 44 for the passage of the contact elements 19a of the contact units 19 are arranged in alignment with each other.
  • the example of the upper three guard plates 49b to 49d is shown that a displacement of the protective plates upwardly blocked in their open position, however, the upper three guard plates 49b to 49d are thus locked by a first lock in its closed position.
  • This first locking is effected by blocking elements 56, which are integrally formed on the protective plates 49b to 49d and which a on the cover 44 kragthereartig molded stop 57 - that is a stationary held to the drawer stop - facing.
  • the upper three protection plates 49b to 49d thus fulfill the function of an additional cover, without the possibility of the passage to the busbars 24 release.
  • Only the lowermost protective plate 49a fulfills the function of a shutter and can be transferred from its closed position to its open position, since the blocking elements 56 have been broken off here by hand. That's how it shows FIG. 11 the protective plate 49 a before breaking off the locking elements 56 and the FIG. 12 shows the same protective plate 49a after breaking away the locking elements 56th
  • the lowermost protective plates 49a would indeed by their own weight in the in FIG. 13 remain in the closed position shown until an opening operation occurs.
  • the blocking means 58 consists of two locking plates 58a, 58b, which are each held movably under the force of a spring 59a, 59b on the insertion compartment 3 and which are arranged in mutually aligned, mutually aligned recesses 60a, 61a; 60b, 61b of the protective plate 49a and the cover 44 engage.
  • To cancel the second locking of the protective plates 49a is a transfer of the two locking plates 58a, 58b - ie a transfer of the locking means 58 - from one in the FIGS. 15 to 17 shown lock position in one in the FIGS. 18 to 20 required release position required.
  • the two locking plates 58a, 58b have stop edges 63a, 63b, which protrude into the path of movement of the electrical insertion unit 4 such that the locking plates 58a, 58b at Transfer the insertion unit 4 from its initial position in their in the FIG. 5 shown end position from its locking position shown in Figures 15 to 17 in their in the FIGS. 18 to 20 shown release position are transferred.
  • the locking plates 58a, 58b are thus actuated upon insertion of the electrical insertion unit 4 into the insertion compartment 3 and release the movement of the protective plate 49a (of the shutter) when the insertion unit 4 is inserted.
  • FIGS. 22 to 24 is a first 64a of the actuating plates on guide plates 65a (see also FIGS. 6, 7 and 9 ) of the electrical plug-in unit 4 held displaceable, which are bent from the left side wall 15 of the plug-in unit 4 inwards.
  • These guide plates 65a pass through T-shaped cutouts 66a of the first actuating plate 64a.
  • a second 64b of the actuating plates is slidably held on a guide plate 65b of a holding part 67 of the plug-in unit 4.
  • This holding part 67 is according to FIG. 9 inserted into a first recess 68 of a first fastening tab 69 and in a slot 70 open at the edge of a second fastening tab 71 of the plug-in housing 12 and fixed by a transverse strut 72 on the plug-in housing.
  • the guide tab 65b of the holding part 67 passes through an L-shaped cutout 66b of the second actuating plate 64b.
  • the attachment of the actuating plates 64a, 64b takes place in that first the guide tabs 65a, 65b are inserted through the wide part of the T-shaped or L-shaped cutouts 66a, 66b. Subsequently, the actuating plates 64a, 64b so far moved down until they have their in the FIG. 6 reach shown starting position, in which the guide plates 65a, 65b side edges of the T-shaped or L-shaped cutouts 66a, 66b cross over into the narrow region of the cutouts 66a, 66b have occurred.
  • the actuating plates 64a, 64b each have a slotted link 73a, 73b, in each of which a control pin 74 held on the transverse slide 36 engages.
  • the cross slide 36 provided with the control pins 74 thus serves as control means for the actuating means 64 for displacing the lowermost protective plate 49a. Under the influence of this control means, the actuating means 64 on the plug-in unit 4 from his in the FIG. 6 shown starting position in his in the FIG. 7 shown end position movable.
  • the two actuating plates 64a, 64b each have an insertion nose 75a, 75b which points in the direction of displacement 22 and can be inserted into an opening 76a, 76b of an associated plug-in receptacle 77a, 77b of the protective plate 49a, which extends counter to the insertion nose 75a, 75b.
  • the actuating means 64 projects with the insertion lugs 75a, 75b thus in the path of movement of the lowermost protective plate 49a, that this protective plate only when transferring the actuating means 64 from his in the FIG. 6 shown starting position in his in the FIG. 7 shown end position from its closed position to its open position and on the other hand only when transferring the actuating means from its end position to its initial position from its open position to its closed position can be transferred.
  • the protective plate 49a remains open and only when the contact elements 19a are retracted (as soon as the contact elements 19a have passed through the through-openings 54, 55) are closed by the actuating means 64 again.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

Die Erfindung betrifft die konstruktive Gestaltung einer Schutzvorrichtung gegen Berühren elektrischer Leiter in einer Stromverteilereinheit, wobei die Stromverteilereinheit ein Einschubfach und eine in dem Einschubfach aus einer Anfangsposition in eine Endposition verschiebbare elektrische Einschubeinheit aufweist. Diese ist bei unter Spannung stehender Anlage aus dem Fach entnehmbar.The invention relates to the structural design of a protective device against touching electrical conductors in a power distribution unit, wherein the power distribution unit has an insertion compartment and an electrical insertion unit displaceable in the insertion compartment from an initial position to an end position. This can be removed from the compartment when the system is under tension.

Aus der Druckschrift DE 10 2005 026 388 B3 ist eine Stromverteilereinheit mit einer Einschubeinheit (Einschub) bekannt, bei der in der Einschubeinheit ortsfest fixierte Kontakte und in der Einschubeinheit verschiebbar geführte Kontakteinheiten vorgesehen sind, wobei die verschiebbar geführten Kontakteinheiten bei in Endposition befindlicher Einschubeinheit aus einer Trenn- in eine Kontaktstellung überführbar sind. Dabei kontaktieren Kontaktelemente der verschiebbar geführten Kontakteinheiten in der Trennstellung der Kontakteinheiten nur die ortsfest fixierten Kontakte. Beim Überführen in ihre Kontaktstellung gleiten die Kontaktelemente der Kontakteinheiten an den ortsfest fixierten Kontakten entlang und gelangen zusätzlich in Kontakt mit dort gezeigten elektrischen Leitern in Form von Stromschienen (Feldschienen). Hierbei ist der Durchgriff zu den Stromschienen jederzeit offen. Somit besteht die Gefahr, dass kleinere Gegenstände in Kontakt mit den Stromschienen kommen können. - Aus der Praxis sind zwar Abdeckungen für die Feldschienen bekannt, diese weisen aber Durchtrittsöffnungen für den Durchtritt der Kontaktelemente auf und genügen daher zwar den Anforderungen der Fingersicherheit, schützen jedoch weiterhin nicht vor dem Problem des Durchtritts kleinerer Gegenstände.From the publication DE 10 2005 026 388 B3 a power distribution unit with a slide-in unit (insert) is known, in which fixedly fixed contacts in the plug-in unit and in the plug-in unit slidably guided contact units are provided, wherein the displaceably guided contact units in befindlichem in end position plug-in unit from a separation in a contact position can be transferred. In this case contact elements of the displaceably guided contact units in the disconnected position of the contact units contact only the fixed fixed contacts. When transferring into their contact position, the contact elements of the contact units slide along the fixedly fixed contacts and additionally come into contact with electrical conductors in the form of busbars (field rails) shown there. Here, the access to the busbars is always open. Thus, there is a risk that smaller objects may come into contact with the busbars. Although in practice covers for the field rails are known, but these have passages for the passage of the contact elements and therefore indeed meet the requirements of finger safety, but continue to protect against the problem of the passage of smaller items.

Aus der Druckschrift DE 693 04 818 T2 ist als Stand der Technik eine andere Stromverteilereinheit bekannt, die ein Einschubfach in Form eines Grundrahmens, eine in dem Einschubfach aus einer Anfangsposition in eine Endposition verschiebbare elektrische Einschubeinheit in Form eines Trennschalters und eine gattungsgemäße Schutzvorrichtung gegen Berühren elektrischer Leiter in der Stromverteilereinheit aufweist. Die dort gezeigte gattungsgemäße Schutzvorrichtung weist eine im Grundrahmen quer zur Verschiebungsrichtung des Trennschalters aus einer Geschlossen-Stellung in eine Offen-Stellung verschiebbare Schutzplatte in Form einer beweglichen Verschlusslamelle und ein am Trennschalter gehaltenes Betätigungsmittel zum Verschieben der Schutzplatte in Form einer Verschlussbetätigungsplatte auf, wobei die Verschlussbetätigungsplatte beim Verschieben des Trennschalters aus seiner Anfangsposition in seine Endposition über eine Schräge auf einen Betätigungsstift der beweglichen Verschlusslamelle einwirkt und diese anhebt. - Bei dieser bekannten Schutzvorrichtung verharrt die Schutzplatte an sich bis zur öffnenden Betätigung durch das Betätigungsmittel aufgrund der Wirkung ihres Eigengewichtes in der geschlossenen Lage. Jedoch können allein schon dem Eigengewicht entgegen gerichtete Stöße, wie sie beispielsweise auf Schiffen auftreten, die Wirkung des Eigengewichtes aufheben und ohne eine öffnende Betätigung durch das Betätigungselement ein Überführen der Schutzplatte in ihre Offen-Stellung bewirken.From the publication DE 693 04 818 T2 is known as prior art, another power distribution unit having an insertion compartment in the form of a base frame, an insertable in the insertion compartment from an initial position to an end position electrical insertion unit in the form of a circuit breaker and a generic protection device against touching electrical conductors in the power distribution unit. The generic protection device shown there has a in the base frame transversely to the direction of displacement of the circuit breaker from a closed position to an open position sliding protective plate in the form of a movable shutter blade and held on the circuit breaker actuating means for moving the protective plate in the form of a shutter actuating plate, wherein the shutter actuating plate when moving the circuit breaker from its initial position to its end position via a slope on an actuating pin of the movable shutter blade acts and lifts them. - In this known protection device, the protective plate persists in itself until the opening operation by the actuating means due to the effect of its own weight in the closed position. However, even the self-weight directed shocks, such as those that occur on ships, cancel the effect of its own weight and cause without an opening operation by the actuator transferring the protective plate in its open position.

Ausgehend von einer Schutzvorrichtung mit den Merkmalen des Oberbegriffes des Patentanspruches 1 ( DE 693 04 818 T2 ) liegt der Erfindung die Aufgabe zu Grunde, die Schutzvorrichtung noch sicherer zu gestalten.Starting from a protective device with the features of the preamble of claim 1 ( DE 693 04 818 T2 ), the invention is based on the object to make the protection even more secure.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Betätigungsmittel unter der Einwirkung eines Steuermittels an der Einschubeinheit aus einer Ausgangsposition in eine Endposition bewegbar ist, wobei das Betätigungsmittel bei in ihrer Endposition befindlichen elektrischen Einschubeinheit derart in die Bewegungsbahn der Schutzplatte ragt, dass die Schutzplatte zum Einen nur beim Überführen des Betätigungsmittels aus seiner Ausgangsposition in seine Endposition aus ihrer Geschlossen-Stellung in ihre Offen-Stellung und zum Anderen nur beim Überführen des Betätigungsmittels aus seiner Endposition in seine Ausgangsposition aus ihrer Offen-Stellung in ihre Geschlossen-Stellung überführbar ist.This object is achieved in that the actuating means under the action of a control means on the plug-in unit is movable from an initial position to an end position, wherein the actuating means in located in its end position electrical plug-in unit such in the trajectory of the protective plate protrudes that the protective plate on the one hand only when transferring the actuating means from its initial position to its end position from its closed position to its open position and on the other hand only when transferring the actuating means from its end position to its original position from its open Position in its closed position can be transferred.

Um die Schutzplatte auch vor dem Erreichen der Endposition der elektrischen Einschubeinheit sicher in ihrer Geschlossen-Stellung zu halten ist in vorteilhafter Ausgestaltung der neuen Schutzvorrichtung eine durch ein Sperrelement bewirkte erste Verriegelung und/oder eine durch ein Sperrmittel bewirkte zweite Verriegelung der Schutzplatte vorgesehen, wobei die Verschiebbarkeit der Schutzplatte aus der Geschlossen-Stellung in die Offen-Stellung nur bei Aufhebung der Verriegelungen gegeben ist.In order to keep the protective plate safely in its closed position even before reaching the end position of the electrical plug-in unit is provided in an advantageous embodiment of the new protection device caused by a blocking element first locking and / or effected by a locking means second locking the protective plate, wherein the Displacement of the protective plate from the closed position to the open position is given only when the interlocks.

Dabei kann einerseits das Sperrelement, das die erste Verriegelung der Schutzplatte bewirkt, an der Schutzplatte einstückig angeformt sein und einem ortsfest zum Einschubfach gehaltenen Anschlag gegenüberstehen, wobei zum Aufheben der ersten Verriegelung der Schutzplatte ein Ausbrechen des Sperrelementes erforderlich ist.In this case, on the one hand, the blocking element, which causes the first locking of the protective plate, integrally formed on the protective plate and a stationary held to the insertion compartment stop facing, to cancel the first locking of the protective plate, a breaking out of the blocking element is required.

Andererseits kann das Sperrmittel, das die zweite Verriegelung der Schutzplatte bewirkt, am Einschubfach bewegbar gehalten und zum Aufheben der zweiten Verriegelung der Schutzplatte ein Überführen des Sperrmittels aus einer Sperr-Stellung in eine Freigabe-Stellung erforderlich sein, wobei das Sperrmittel derart in die Bewegungsbahn der Einschubeinheit ragt, dass es beim Überführen der Einschubeinheit aus ihrer Anfangsposition in ihre Endposition aus seiner Sperr-Stellung in seine Freigabe-Stellung überführbar ist.On the other hand, the blocking means, which causes the second locking of the protective plate, held movably on the insertion compartment and for canceling the second locking of the protective plate, a transfer of the blocking means from a locked position to a release position may be required, wherein the blocking means in the movement path of the Insertion unit protrudes that it can be transferred from its initial position to its release position from its initial position to its release position when transferring the plug-in unit from its initial position.

Die neue Schutzvorrichtung ist auf einfache Weise in Stromverteilereinheiten einsetz- oder nachrüstbar, die ein Einschubfach und eine in dem Einschubfach aus einer Anfangsposition in eine Endposition verschiebbare elektrische Einschubeinheit aufweisen.The new protection device can be easily inserted into power distribution units or retrofitted, the one slot and an in the insertion compartment from an initial position in an end position displaceable electrical insertion unit.

Bei Stromverteilereinheiten, bei denen die elektrischen Einschubeinheiten eine aus einer Trennstellung in eine Kontaktstellung verschiebbare Kontakteinheit aufweisen, kann auf konstruktiv einfache Weise das auf das Betätigungsmittel wirkende Steuermittel von einem zum Verschieben der Kontakteinheit dienenden Querschieber gebildet sein.In power distribution units in which the electrical plug-in units have a displaceable from a disconnected position in a contact position contact unit, the control means acting on the actuating means may be formed by a serving for moving the contact unit cross slide in a structurally simple manner.

Um die Schutzplatte verliersicher zu halten und bei Aufhebung der Verriegelungen verschiebbar zu führen kann eine fest am Einschubfach fixierte Abdeckung vorgesehen sein. Dabei ist es zum optimalen Berührungsschutz vorteilhaft, wenn die Schutzplatte mit ersten Durchtrittsöffnungen und die Abdeckung mit zugeordneten zweiten Durchtrittsöffnungen versehen sind, wobei die Durchtrittsöffnungen der Schutzplatte bei in ihrer Offenstellung befindlicher Schutzplatte zum Durchtritt verschiebbarer Kontakte der Kontakteinheit fluchtend zu den zugeordneten Durchtrittsöffnungen der Abdeckung angeordnet sind.In order to keep the protective plate captive and slidably lead to the lifting of the latches can be provided fixed to the insertion compartment cover fixed. It is advantageous for optimum contact protection, when the protective plate are provided with first passage openings and the cover with associated second passage openings, wherein the passage openings of the protective plate are arranged in its open position befindlicher protective plate for the passage of sliding contacts of the contact unit in alignment with the associated passage openings of the cover ,

Zur Anpassung an das für die Anordnung von elektrischen Einschubeinheiten in Niederspannungs-Schaltanlagen übliche Rastermaß können an der Abdeckung mehrere Schutzplatten in einem vorgegebenen Raster von z. B. 50mm angeordnet sein.To adapt to the usual for the arrangement of electrical plug-in units in low-voltage switchgear grid can on the cover several protective plates in a given grid of z. B. 50mm can be arranged.

Die neue Schutzvorrichtung ist in den Figuren 1 bis 24 dargestellt.The new protection device is in the FIGS. 1 to 24 shown.

Dabei zeigen:

  • Figur 1 eine Stromverteilereinheit mit einer Vielzahl von Einschubanordnungen
  • Figur 2 eine der Einschubanordnungen gemäß der Figur 1 mit einem Einschubfach und einer in dem Einschubfach aus einer Anfangsposition in eine Endposition und zurück verschiebbaren elektrischen Einschubeinheit,
  • Figuren 3 und 4 einen Ausschnitt der Figur 2 bei in Trenn- bzw. Kontaktstellung befindlichen Kontaktelementen der elektrischen Einschubeinheit,
  • Figur 5 bis 7 die Einschubanordnung gemäß der Figur 2 versehen mit einer erfindungsgemäßen Schutzvorrichtung, die eine mit Schutzplatten versehene Abdeckung, ein an der elektrischen Einschubeinheit gehaltenes Betätigungsmittel zum Verschieben einer der Schutzplatten und ein an der elektrischen Einschubeinheit gehaltenes Sperrmittel zur Verriegelung der Schutzplatte in einer Geschlossen-Stellung aufweist,
  • Figur 8 das Einschubfach der Einschubanordnung,
  • Figur 9 ein Gehäuse der elektrischen Einschubeinheit,
  • Figur 10 die Abdeckung,
  • Figur 11 eine der Schutzplatten mit einem Sperrelement zur Verriegelung der Schutzplatte in ihrer Geschlossen-Stellung,
  • Figur 12 eine der Schutzplatten ohne Sperrelement,
  • Figuren 13 und 14 die mit den Schutzplatten versehene Abdeckung,
  • Figuren 15 bis 17 das Sperrmittel in einer Sperr-Stellung,
  • Figuren 18 bis 20 das Sperrmittel in einer Freigabe-Stellung,
  • Figur 21 ein Steuermittel zum Einwirken auf das Betätigungsmittel und
  • Figuren 22 bis 26 das Einwirken des Steuermittels auf das Betätigungsmittel.
Showing:
  • FIG. 1 a power distribution unit having a plurality of plug-in arrangements
  • FIG. 2 one of the plug-in arrangements according to the FIG. 1 with an insertion compartment and an electrical insertion unit which can be displaced in the insertion compartment from an initial position into an end position and can be moved back,
  • FIGS. 3 and 4 a section of the FIG. 2 in contact or disconnected contact elements of the electrical plug-in unit,
  • Figure 5 to 7 the insertion arrangement according to the FIG. 2 provided with a protective device according to the invention comprising a cover provided with protective plates, an actuating means held on the electrical plug-in unit for displacing one of the protective plates and a locking means held on the electrical plug-in unit for locking the protective plate in a closed position,
  • FIG. 8 the insertion compartment of the insertion arrangement,
  • FIG. 9 a housing of the electrical plug-in unit,
  • FIG. 10 the cover,
  • FIG. 11 one of the protective plates with a locking element for locking the protective plate in its closed position,
  • FIG. 12 one of the protective plates without blocking element,
  • FIGS. 13 and 14 the cover provided with the protective plates,
  • FIGS. 15 to 17 the locking means in a locked position,
  • FIGS. 18 to 20 the blocking means in a release position,
  • FIG. 21 a control means for acting on the actuating means and
  • FIGS. 22 to 26 the action of the control means on the actuating means.

Die Figur 1 zeigt beispielhaft eine Stromverteilereinheit 1 in Form eines Schaltfeldes einer Niederspannungs-Schaltanlage mit fünf Einschubanordnungen 2, die jeweils ein Einschubfach 3 in Form eines Tragbleches und eine in einer Einschubrichtung in dem Einschubfach aus einer Anfangsposition in eine Endposition verschiebbare elektrische Einschubeinheit 4 aufweisen.The FIG. 1 shows by way of example a power distribution unit 1 in the form of a control panel of a low-voltage switchgear with five slide assemblies 2, each having a slot 3 in the form of a support plate and an insertable in an insertion direction in the insertion compartment from an initial position to an end position sliding electrical insertion unit 4.

An Frontwänden 5 der elektrischen Einschubeinheiten 4 sind Handhaben 6 drehbar angeordnet. Jede der Handhaben 6 ist in nicht gezeigter Weise drehfest mit einer Kupplung einer Schaltwelle eines Hauptschalters verbindbar, um den Hauptschalter ein- und ausgeschalten zu können.On front walls 5 of the electrical plug-in units 4 handles 6 are rotatably arranged. Each of the handles 6 is rotatably connected in a manner not shown with a clutch of a switching shaft of a main switch to turn on and off the main switch can.

Die oberste der gezeigten Einschubanordnungen 2 zeigt eine in einer Aussparung 7 im Bereich der Frontwand 5 aufgenommene Antriebseinheit 8 in deren Frontteil ein Handschieber 9 beweglich angeordnet ist. Der Handschieber 9 befindet sich in einer Verschluss- oder Ruhestellung, bei welcher eine dahinter liegende Zugangsöffnung abgedeckt wird. Mit dem Bezugszeichen 10 ist eine Anzeigeplatte bezeichnet, welche den Schaltzustand des Hauptschalters anzeigt. Im Beispiel der Figur 1 befinden sich alle Hauptschalter im ausgeschalteten Zustand.The uppermost of the slide-in arrangements 2 shown shows a drive unit 8 accommodated in a recess 7 in the region of the front wall 5 in the front part of which a manual slide 9 is movably arranged. The hand slider 9 is in a closed or rest position, in which an underlying access opening is covered. Reference numeral 10 denotes a display panel which indicates the switching state of the main switch. In the example of Figure 1, all main switches are in the off state.

Bei der darunter liegenden Einschubeinheit 2 ist der Handschieber 9 nach rechts geschoben, so dass nun die dahinter liegende Zugangsöffnung 11 zum Einstecken eines Betätigungswerkzeuges sichtbar ist.In the underlying plug-in unit 2 of the slide 9 is pushed to the right, so that now the behind lying access opening 11 is visible for insertion of an actuating tool.

Im hinteren Teil der gezeigten Stromverteilereinheit 1 sind in dieser Darstellung nicht sichtbare elektrische Leiter in Form eingangseitiger Stromschienen und ausgangsseitiger Stromschienen in einem Stromschienenkanal benachbart zu den Einschubanordnungen 2 angeordnet. Dabei sind in dieser Darstellung ebenfalls nicht sichtbare Kontakteinheiten von Kontaktanordnungen einer jeweiligen eingeschobenen elektrischen Einschubeinheit 4 mit korrespondierenden der Stromschienen verbindbar.In the rear part of the power distribution unit 1, visible electrical conductors in the form of input-side busbars and output-side busbars in a busbar channel adjacent to the plug-in arrangements 2 are arranged in this illustration. In this case also not visible contact units of contact arrangements of a respective inserted electrical plug-in unit 4 are connected to corresponding busbars in this illustration.

Gemäß der Figur 2, die eine der Einschubanordnungen 2 in Draufsicht zeigt, weist die elektrische Einschubeinheit 4 ein Einschubgehäuse 12 mit einer Grundplatte 13 der Frontwand 5, einer Rückwand 14 sowie zwei Seitenwänden 15, 16 auf. Mit dem Bezugszeichen 17 ist ein eingangsseitiger Teil der Kontaktanordnung und mit dem Bezugszeichen 18 eine ausgangsseitiger Teil der Kontaktanordnung bezeichnet. Die Kontaktanordnung weist eingangsseitige verschiebbare Kontakteinheiten 19 und ausgangsseitige verschiebbare Kontakteinheiten 20 sowie ein Mittel 21 zum Verschieben der Kontakteinheiten 19, 20 in der Verschiebungsrichtung 22 auf. Die Verschiebungsrichtung 22 der Kontakteinheiten beim Überführen aus einer Trennstellung in eine Kontaktstellung entspricht der Einschubrichtung der Einschubeinheit in dem Einschubfach. Die eingangsseitigen Kontakteinheiten 19 dienen zur Herstellung einer elektrischen Verbindung zwischen ortsfest im Einschubgehäuse 12 angeordneten eingangsseitigen Kontakten 23 und zugeordneten der eingangsseitigen Stromschienen 24. In gleicher Weise dienen die ausgangsseitigen Kontakteinheiten 20 zur Herstellung einer elektrischen Verbindung zwischen ortsfest im Einschubgehäuse 12 angeordneten ausgangsseitigen Kontakten 25 und zugeordneten der ausgangsseitigen Stromschienen 26.According to the FIG. 2 , which shows one of the plug-in arrangements 2 in plan view, the electrical plug-in unit 4 has a plug-in housing 12 with a base plate 13 of the front wall 5, a rear wall 14 and two side walls 15, 16. Reference numeral 17 designates an input-side part of the contact arrangement and reference numeral 18 designates an output-side part of the contact arrangement. The contact arrangement has input-side displaceable contact units 19 and output-side displaceable contact units 20 and a means 21 for displacing the contact units 19, 20 in the displacement direction 22. The displacement direction 22 of the contact units when transferring from a disconnected position to a contact position corresponds to the insertion direction of the plug-in unit in the insertion compartment. The input-side contact units 19 are used to produce an electrical connection between stationary in the insertion housing 12 arranged input side contacts 23 and associated with the input side busbars 24. In the same way, the output side contact units 20 serve to establish an electrical connection between stationary in the rack housing 12 arranged on the output side contacts 25 and associated with the output side busbars 26th

Die Kontakteinheiten 19, 20 und das Mittel 21 zum Verschieben der Kontakteinheiten sind im Wesentlichen so aufgebaut, wie es in der Druckschrift DE 10 2005 026 388 B3 beschrieben ist. Auch die Herstellung der elektrischen Verbindung zwischen den ortsfest im Einschubgehäuse 12 angeordneten Kontakten 23, 25 und den zugeordneten der Stromschienen 24, 26 erfolgt im Wesentlichen so, wie es in der Druckschrift DE 10 2005 026 388 B3 beschrieben ist.The contact units 19, 20 and the means 21 for displacing the contact units are constructed substantially as described in the document DE 10 2005 026 388 B3 is described. The production of the electrical connection between the stationary in the plug-in housing 12 arranged contacts 23, 25 and the associated busbars 24, 26 takes place substantially as it is in the document DE 10 2005 026 388 B3 is described.

So bestehen auch die in der Figur 2 gezeigten Kontakteinheiten 19, 20 aus einem in dieser Darstellung nicht sichtbaren Lagerkörper, in dem Kontaktelemente 19a, 20a formschlüssig anliegend gehalten sind. Im Unterschied zu den Kontakteinheiten, wie sie aus der DE 10 2005 026 388 B3 bekannt sind, weisen die gezeigten eingangsseitigen Kontakteinheiten 19 ein gemeinsames erstes Gehäuseteil 27 und die ausgangsseitigen Kontakteinheiten 20 ein gemeinsames zweites Gehäuseteil 28 auf.So also exist in the FIG. 2 shown contact units 19, 20 of a non-visible in this representation bearing body, are held in the contact elements 19a, 20a positively fitting. In contrast to the contact units, as they are from the DE 10 2005 026 388 B3 are known, the input-side contact units 19 shown have a common first housing part 27 and the output-side contact units 20 on a common second housing part 28.

Das Mittel 21 zum Verschieben der Kontakteinheiten 19, 20 weist zwei in der elektrischen Einschubeinheit quer verlaufende Zahnstangen 29, 30 auf, die über einen Ritzel 31 zur Seite beweglich sind. In den Ritzel 31 kann dabei über die Frontwand 5 mit dem Betätigungswerkzeug eingegriffen werden. Über Eckumlenkungen 32, 33 werden Leisten 34, 35 in der Verschiebungsrichtung 22 bzw. entgegengesetzt zu dieser Verschiebungsrichtung 22 bewegt. Ein mit den Leisten 34, 35 gekoppelter Querschieber 36 bewegt sich dann entsprechend in der Verschiebungsrichtung 22 und entgegengesetzt zu dieser Verschiebungsrichtung 22. Die Kontakteinheiten 19, 20 sind dabei mittels des Querschiebers 36 in der Verschiebungsrichtung 22 geführt.The means 21 for displacing the contact units 19, 20 has two in the electric rack unit transverse racks 29, 30 which are movable via a pinion 31 to the side. In the pinion 31 can be intervened on the front wall 5 with the operating tool. About Eckumlenkungen 32, 33 strips 34, 35 in the direction of displacement 22 and opposite to this direction of displacement 22 moves. A cross slide 36 coupled to the strips 34, 35 then moves correspondingly in the displacement direction 22 and opposite to this displacement direction 22. The contact units 19, 20 are guided by means of the cross slide 36 in the direction of displacement 22.

Gemäß der Figuren 3 und 4, die einen Ausschnitt der Figur 2 im Bereich der linken eingangsseitigen Kontakteinheit 19 zeigen, weist der Querschieber 36 im Unterschied zu dem Querschieber wie er aus der DE 10 2005 026 388 B3 bekannt ist, Nasen 37, 38 auf, die in seitliche Ausnehmungen 39, 40 des Lagerkörpers der Kontakteinheit 19 eingreifen. Zur leichteren Montage der Kontaktelemente ist der Lagerkörper jeweils durch zwei ineinander verrastbare Teilkörper 41, 42 gebildet, wobei in jeden der Teilkörper 41, 42 eine der Nasen 37, 38 seitlich eingreift.According to the FIGS. 3 and 4 that a section of the FIG. 2 show in the region of the left input side contact unit 19, the cross slide 36 in contrast to the cross slide as he from the DE 10 2005 026 388 B3 is known, lugs 37, 38 which engage in lateral recesses 39, 40 of the bearing body of the contact unit 19. For easier assembly of the contact elements of the bearing body is formed in each case by two interlocking part body 41, 42, wherein in each of the part body 41, 42, one of the lugs 37, 38 laterally engages.

Unterschiede hinsichtlich der Kontakteinheiten 19, 20 und des Mittels 21 zum Verschieben der Kontakteinheiten bestehen also im Vergleich zu den Mitteln, wie sie aus der Druckschrift DE 10 2005 026 388 B3 bekannt sind, im Wesentlichen hinsichtlich der konstruktiven Gestaltung der Fixierung der ortsfest im Einschubgehäuse 12 angeordneten Kontakte 23 und 25 und hinsichtlich des Eingriffes des Querschiebers 36 in die Lagerkörper.Differences in the contact units 19, 20 and the means 21 for moving the contact units thus exist in comparison to the means as described in the document DE 10 2005 026 388 B3 are known, substantially with respect to the structural design of the fixation of the stationary in the plug-in housing 12 arranged contacts 23 and 25 and with respect to the engagement of the cross slide 36 in the bearing body.

Gemäß den Figuren 5 bis 7 ist an der in der Einschubrichtung 43 weisenden Seite des als Tragblech ausgebildeten Einschubfaches 3 und zwar vor den eingangsseitigen Stromschienen 24 eine Abdeckung 44 fixiert. Hierzu weist das Tragblech gemäß der Figur 8 zwei nach oben gebogene Befestigungslaschen 45 auf. Diese Befestigungslaschen 45 und die Abdeckung 44 selbst (vgl. Figur 10) sind mit einander zugeordneten Durchgangsbohrungen 46, 47 versehen. Das Fixieren der Abdeckung 44 erfolgt auf einfache und sichere Weise durch Schrauben 48 die die einander zugeordneten Durchgangsbohrungen 46, 47 durchgreifen (vgl. auch Figur 15).According to the FIGS. 5 to 7 is at the pointing in the direction of insertion 43 side of the trained as a support sheet insertion compartment 3 and that is fixed in front of the input side bus bars 24, a cover 44. For this purpose, the support plate according to the FIG. 8 two upwardly bent fastening tabs 45. These fastening tabs 45 and the cover 44 itself (see. FIG. 10 ) are provided with associated through holes 46, 47. The fixing of the cover 44 is carried out in a simple and secure manner by screws 48 which passing through through holes 46, 47 pass through (see also FIG. 15 ).

An der Abdeckung 44 sind vier Schutzplatten 49a, 49b, 49c und 49d in einem Rastermaß von 50mm verliersicher gehalten. Dieses Rastermaß von 50mm entspricht dem Rastermaß, in dem Einschubeinheiten 3 in der Stromverteilereinheit 1 angeordnet werden könnten.On the cover 44 four protective plates 49a, 49b, 49c and 49d held captive in a grid of 50mm. This grid dimension of 50 mm corresponds to the grid dimension in which plug-in units 3 could be arranged in the power distribution unit 1.

Wie insbesondere auch in der Figur 10 gezeigt, weist die Abdeckung 44 zum Halten der Schutzplatten 49a bis 49d hakenartige Führungselemente 50 und Nasen 51 auf, wobei die hakenartige Führungselemente 50 der Abdeckung 44 mit zugeordneten L-förmigen Ausschnitten 52 der Schutzplatten 49a bis 49d und die Nasen 51 der Abdeckung 44 mit zugeordneten Schnapplappen 53 der Schutzplatten 49a bis 49d zusammenwirken. Das Anbringen der Schutzplatten 49a bis 49d erfolgt dadurch, dass zunächst die hakenartigen Führungselemente 50 durch den abgewinkelten breiten Teil der L-förmigen Ausschnitte 52 gesteckt werden. Anschließend werden die Schutzplatten 49a bis 49d soweit noch oben verschoben, bis die Schutzplatten 49a bis 49d ihre in der Figur 13 gezeigte Geschlossen-Stellung erreichen, bei der die hakenartigen Führungselemente 50 eine Seitenkante der L-förmigen Ausschnitte übergreifend in den schmalen Bereich der L-förmigen Ausnehmungen eingetreten sind und die Nasen 51 der Abdeckung 44 hinter den Schnapplappen 53 der Schutzplatten 49a bis 49d verrasten sind. Ein wieder nach unten Verschieben der Schutzplatten 49a bis 49d ist nur bei vorherigem Lösen dieser Verrastung möglich.As in particular in the FIG. 10 shown, the cover 44 for holding the protective plates 49a to 49d hook-like guide elements 50 and lugs 51, wherein the hook-like guide elements 50 of the cover 44 with associated L-shaped cutouts 52 of the protective plates 49a to 49d and the lugs 51 of the cover 44 associated with Snap tabs 53 of the protective plates 49a to 49d cooperate. The attachment of the protective plates 49a to 49d takes place in that first the hook-like guide elements 50 are inserted through the angled wide part of the L-shaped cutouts 52. Subsequently, the protective plates 49a to 49d are moved so far up until the protective plates 49a to 49d their in the FIG. 13 reach shown closed position in which the hook-like guide elements 50 have entered a side edge of the L-shaped cutouts cross into the narrow region of the L-shaped recesses and the lugs 51 of the cover 44 are latched behind the snap tabs 53 of the protective plates 49a to 49d. A downward movement of the protective plates 49a to 49d is only possible with prior release of this locking.

Wie in Figur 14 am Beispiel der untersten Schutzplatte 49a gezeigt, können die Schutzplatten nach Art eines Shutters in eine Offen-Stellung überführt werden, bei der erste Durchtrittsöffnungen 54 der Schutzplatte 49a und zugeordnete zweite Durchtrittsöffnungen 55 der Abdeckung 44 zum Durchtritt der Kontaktelemente 19a der Kontakteinheiten 19 fluchtend zueinander angeordnet sind.As in FIG. 14 shown on the example of the lowermost protective plate 49a, the protective plates can be transferred in the manner of a shutter in an open position, in the first passages 54 of the protective plate 49a and associated second passage openings 55 of the cover 44 for the passage of the contact elements 19a of the contact units 19 are arranged in alignment with each other.

Am Beispiel der oberen drei Schutzplatten 49b bis 49d ist gezeigt, dass ein Verschieben der Schutzplatten nach oben in ihre Offen-Stellung jedoch blockiert, die oberen drei Schutzplatten 49b bis 49d also durch eine erste Verriegelung in ihrer Geschlossen-Stellung verriegelt sind. Diese erste Verriegelung wird durch Sperrelemente 56 bewirkt, die an den Schutzplatten 49b bis 49d einstückig angeformt sind und denen ein an der Abdeckung 44 kragträgerartig angeformter Anschlag 57 - also ein ortsfest zum Einschubfach gehaltenen Anschlag - gegenübersteht.The example of the upper three guard plates 49b to 49d is shown that a displacement of the protective plates upwardly blocked in their open position, however, the upper three guard plates 49b to 49d are thus locked by a first lock in its closed position. This first locking is effected by blocking elements 56, which are integrally formed on the protective plates 49b to 49d and which a on the cover 44 kragträgerartig molded stop 57 - that is a stationary held to the drawer stop - facing.

Die oberen drei Schutzplatten 49b bis 49d erfüllen damit die Funktion einer zusätzlichen Abdeckung, ohne die Möglichkeit den Durchgriff zu den Stromschienen 24 freizugeben. Nur die unterste Schutzplatte 49a erfüllt die Funktion eines Shutters und ist aus ihrer Geschlossen- in ihre Offen-Stellung überführbar, da die Sperrelemente 56 hier von Hand weggebrochen wurden. So zeigt die Figur 11 die Schutzplatte 49a vor dem Wegbrechen der Sperrelemente 56 und die Figur 12 zeigt die gleiche Schutzplatte 49a nach dem Wegbrechen der Sperrelemente 56.The upper three protection plates 49b to 49d thus fulfill the function of an additional cover, without the possibility of the passage to the busbars 24 release. Only the lowermost protective plate 49a fulfills the function of a shutter and can be transferred from its closed position to its open position, since the blocking elements 56 have been broken off here by hand. That's how it shows FIG. 11 the protective plate 49 a before breaking off the locking elements 56 and the FIG. 12 shows the same protective plate 49a after breaking away the locking elements 56th

Nur die unterste Schutzplatten 49a (Shutter) ist also durch das Aufheben der ersten Verriegelung an der Abdeckung 44 verschiebbar, sofern - wie im Weiteren beschrieben ist - auch eine zweite Verriegelung aufgehoben wird.Only the lowermost protective plates 49a (shutter) is thus displaceable by removing the first lock on the cover 44, provided that - as described below - a second lock is released.

Prinzipiell würde die unterste Schutzplatten 49a (Shutter) zwar durch ihr Eigengewicht in der in Figur 13 gezeigten Geschlossen-Stellung verharren, bis eine öffnende Betätigung erfolgt.In principle, the lowermost protective plates 49a (shutter) would indeed by their own weight in the in FIG. 13 remain in the closed position shown until an opening operation occurs.

Um die Geschlossen-Stellung jedoch auch ohne die Wirkung des Eigengewichtes sicherzustellen, ist gemäß der Figuren 15 bis 20 eine durch ein Sperrmittel 58 bewirkte zweite Verriegelung der untersten Schutzplatte 49a in ihrer Geschlossen-Stellung vorgesehen, wobei die Verschiebbarkeit dieser Schutzplatte 49a aus der Geschlossen-Stellung in die in der Figur 14 gezeigte Offen-Stellung nur bei Aufhebung der ersten und zusätzlich auch dieser zweiten Verriegelung gegeben ist.However, to ensure the closed position without the effect of its own weight, is in accordance with the FIGS. 15 to 20 provided by a blocking means 58 second locking the lowermost protective plate 49a provided in its closed position, wherein the displaceability of this protective plate 49a from the closed position in the in the FIG. 14 shown open position is given only when the first and in addition also this second locking.

Das Sperrmittel 58 besteht aus zwei Sperrblechen 58a, 58b, die jeweils unter der Kraft einer Feder 59a, 59b am Einschubfach 3 bewegbar gehalten sind und die jeweils in zugeordnete, zueinander fluchtende Ausnehmung 60a, 61a; 60b, 61b der Schutzplatte 49a und der Abdeckung 44 eingreifen. Zum Aufheben der zweiten Verriegelung der Schutzplatten 49a ist ein Überführen der beiden Sperrbleche 58a, 58b - also ein Überführen des Sperrmittels 58 - aus einer in den Figuren 15 bis 17 gezeigten Sperr-Stellung in eine in den Figuren 18 bis 20 gezeigten Freigabe-Stellung erforderlich. Hierdurch gelang ein in Verschiebungsrichtung der Schutzplatte 49a schmaler als die Ausnehmungen 60a, 61a; 60b, 61b ausgebildeter, rückspringender Abschnitt 62a, 62b der beiden Sperrbleche 58a, 58b in den Bereich der zueinander fluchtende Ausnehmung 60a, 61a; 60b, 61b, so dass die Schutzplatte 49a an der Abdeckung 44 nunmehr ein Stück weit nach oben verschoben werden kann und zwar genau so weit, bis die Durchtrittsöffnungen 54 zu den Durchtrittsöffnungen 55 fluchten.The blocking means 58 consists of two locking plates 58a, 58b, which are each held movably under the force of a spring 59a, 59b on the insertion compartment 3 and which are arranged in mutually aligned, mutually aligned recesses 60a, 61a; 60b, 61b of the protective plate 49a and the cover 44 engage. To cancel the second locking of the protective plates 49a is a transfer of the two locking plates 58a, 58b - ie a transfer of the locking means 58 - from one in the FIGS. 15 to 17 shown lock position in one in the FIGS. 18 to 20 required release position required. In this way succeeded in a direction of displacement of the protective plate 49a narrower than the recesses 60a, 61a; 60b, 61b formed, recessed portion 62a, 62b of the two locking plates 58a, 58b in the region of mutually aligned recess 60a, 61a; 60b, 61b, so that the protective plate 49a on the cover 44 can now be displaced a little way upwards and that is exactly as far as the passage openings 54 are aligned with the passage openings 55.

Die beiden Sperrbleche 58a, 58b weisen Anschlagkanten 63a, 63b auf, die derart in die Bewegungsbahn der elektrischen Einschubeinheit 4 ragen, dass die Sperrbleche 58a, 58b beim Überführen der Einschubeinheit 4 aus ihrer Anfangsposition in ihre in der Figur 5 gezeigte Endposition aus ihrer in den Figuren 15 bis 17 gezeigten Sperr-Stellung in ihre in den Figuren 18 bis 20 gezeigte Freigabe-Stellung überführt werden.The two locking plates 58a, 58b have stop edges 63a, 63b, which protrude into the path of movement of the electrical insertion unit 4 such that the locking plates 58a, 58b at Transfer the insertion unit 4 from its initial position in their in the FIG. 5 shown end position from its locking position shown in Figures 15 to 17 in their in the FIGS. 18 to 20 shown release position are transferred.

Die Sperrbleche 58a, 58b werden also beim Einschieben der elektrischen Einschubeinheit 4 in das Einschubfach 3 betätigt und geben die Bewegung der Schutzplatte 49a (des Shutters) bei eingeschobener Einschubeinheit 4 frei.The locking plates 58a, 58b are thus actuated upon insertion of the electrical insertion unit 4 into the insertion compartment 3 and release the movement of the protective plate 49a (of the shutter) when the insertion unit 4 is inserted.

Die federgetriebenen, durch die elektrische Einschubeinheit 4 zwangsgeführten Sperrbleche 58a, 58b, die das Sperrmittel 58 bilden, verhindern somit ein vorzeitiges Öffnen der Schutzplatte 49a für den Fall, dass sich in dem Einschubfach 3 noch keine elektrische Einschubeinheit 4 ihrer Endposition befindet.The spring-driven, forcibly guided by the electrical plug-in unit 4 locking plates 58a, 58b, which form the locking means 58 thus prevent premature opening of the protective plate 49a in the event that in the slot 3 is still no electrical plug-in unit 4 of their final position.

Weiterhin ist gemäß der Figuren 6 und 7 an der elektrischen Einschubeinheit 4 ein Betätigungsmittel 64 (Shutterbetätigung) zum Verschieben der untersten Schutzplatte 49a gehalten. Dieses Betätigungsmittel 64 besteht aus zwei Betätigungsblechen 64a, 64b und übernimmt schon während des Einschiebens der elektrischen Einschubeinheit 4 die Fixierung der Schutzplatte 49a (des Shutters) in ihrer Geschlossen-Stellung.Furthermore, according to the FIGS. 6 and 7 held on the electrical plug-in unit 4, an actuating means 64 (shutter actuation) for displacing the lowermost protective plate 49a. This actuating means 64 consists of two actuating plates 64a, 64b and takes over already during the insertion of the electrical plug-in unit 4, the fixing of the protective plate 49a (the shutter) in its closed position.

Gemäß der Figuren 22 bis 24 ist ein erstes 64a der Betätigungsbleche an Führungslaschen 65a (vgl. auch Figuren 6, 7 und 9) der elektrischen Einschubeinheit 4 verschiebbar gehalten, die aus der linken Seitenwand 15 der Einschubeinheit 4 nach innen abgebogen sind. Diese Führungslaschen 65a durchgreifen T-förmige Ausschnitte 66a des ersten Betätigungsbleches 64a. Ein zweites 64b der Betätigungsbleche ist an einer Führungslasche 65b eines Halteteils 67 der Einschubeinheit 4 verschiebbar gehalten.According to the FIGS. 22 to 24 is a first 64a of the actuating plates on guide plates 65a (see also FIGS. 6, 7 and 9 ) of the electrical plug-in unit 4 held displaceable, which are bent from the left side wall 15 of the plug-in unit 4 inwards. These guide plates 65a pass through T-shaped cutouts 66a of the first actuating plate 64a. A second 64b of the actuating plates is slidably held on a guide plate 65b of a holding part 67 of the plug-in unit 4.

Dieses Halteteil 67 ist gemäß der Figur 9 in eine ersten Ausnehmung 68 einer ersten Befestigungslasche 69 und in einen randseitig offenen Schlitz 70 einer zweiten Befestigungslasche 71 des Einschubgehäuses 12 eingesteckt und durch eine Querstrebe 72 am Einschubgehäuse fixiert. Die Führungslasche 65b des Halteteils 67 durchgreift einen L-förmigen Ausschnitt 66b des zweiten Betätigungsbleches 64b.This holding part 67 is according to FIG. 9 inserted into a first recess 68 of a first fastening tab 69 and in a slot 70 open at the edge of a second fastening tab 71 of the plug-in housing 12 and fixed by a transverse strut 72 on the plug-in housing. The guide tab 65b of the holding part 67 passes through an L-shaped cutout 66b of the second actuating plate 64b.

Das Anbringen der Betätigungsbleche 64a, 64b erfolgt dadurch, dass zunächst die Führungslaschen 65a, 65b durch den breiten Teil der T-förmigen bzw. L-förmigen Ausschnitte 66a, 66b gesteckt werden. Anschließend werden die Betätigungsbleche 64a, 64b soweit noch unten verschoben, bis sie ihre in der Figur 6 gezeigte Ausgangsposition erreichen, bei der die Führungslaschen 65a, 65b Seitenkanten der T-förmigen bzw. L-förmigen Ausschnitte 66a, 66b übergreifend in den schmalen Bereich der Ausschnitte 66a, 66b eingetreten sind.The attachment of the actuating plates 64a, 64b takes place in that first the guide tabs 65a, 65b are inserted through the wide part of the T-shaped or L-shaped cutouts 66a, 66b. Subsequently, the actuating plates 64a, 64b so far moved down until they have their in the FIG. 6 reach shown starting position, in which the guide plates 65a, 65b side edges of the T-shaped or L-shaped cutouts 66a, 66b cross over into the narrow region of the cutouts 66a, 66b have occurred.

Die Betätigungsbleche 64a, 64b weisen jeweils eine Kulisse 73a, 73b auf, in die jeweils ein am Querschieber 36 gehaltener Steuerstift 74 eingreift. Der mit den Steuerstiften 74 versehene Querschieber 36 dient somit als Steuermittel für das Betätigungsmittel 64 zum Verschieben der untersten Schutzplatte 49a. Unter der Einwirkung dieses Steuermittels ist das Betätigungsmittel 64 an der Einschubeinheit 4 aus seiner in der Figur 6 gezeigten Ausgangsposition in seine in der Figur 7 gezeigte Endposition bewegbar.The actuating plates 64a, 64b each have a slotted link 73a, 73b, in each of which a control pin 74 held on the transverse slide 36 engages. The cross slide 36 provided with the control pins 74 thus serves as control means for the actuating means 64 for displacing the lowermost protective plate 49a. Under the influence of this control means, the actuating means 64 on the plug-in unit 4 from his in the FIG. 6 shown starting position in his in the FIG. 7 shown end position movable.

Die beiden Betätigungsbleche 64a, 64b weisen jeweils eine sich in Verschiebungsrichtung 22 weisenden Einstecknase 75a, 75b auf, die jeweils in eine Öffnung 76a, 76b einer zugeordneten, sich der Einstecknase 75a, 75b entgegenstreckenden Steckaufnahme 77a, 77b der Schutzplatte 49a einsteckbar sind.The two actuating plates 64a, 64b each have an insertion nose 75a, 75b which points in the direction of displacement 22 and can be inserted into an opening 76a, 76b of an associated plug-in receptacle 77a, 77b of the protective plate 49a, which extends counter to the insertion nose 75a, 75b.

Bei in seine Endposition befindlichen elektrische Einschubeinheit 4 ragt das Betätigungsmittel 64 mit den Einstecknasen 75a, 75b damit derart in die Bewegungsbahn der untersten Schutzplatte 49a, dass diese Schutzplatte nur beim Überführen des Betätigungsmittels 64 aus seiner in der Figur 6 gezeigten Ausgangsposition in seine in der Figur 7 gezeigte Endposition aus seiner Geschlossen-Stellung in seine Offen-Stellung und zum Anderen nur beim Überführen des Betätigungsmittels aus seiner Endposition in seine Ausgangsposition aus seiner Offen-Stellung in seine Geschlossen-Stellung überführbar ist.When located in its final position electrical insertion unit 4, the actuating means 64 projects with the insertion lugs 75a, 75b thus in the path of movement of the lowermost protective plate 49a, that this protective plate only when transferring the actuating means 64 from his in the FIG. 6 shown starting position in his in the FIG. 7 shown end position from its closed position to its open position and on the other hand only when transferring the actuating means from its end position to its initial position from its open position to its closed position can be transferred.

Beim Verschieben des Querschiebers 36 öffnet also das Betätigungsmittel 64 die Schutzplatte 49a, um die Durchtrittsöffnungen 54, 55 zum Durchtritt der Kontakte 23 freizugeben.When moving the cross slide 36 thus opens the actuating means 64, the protective plate 49 a, to release the passage openings 54, 55 for the passage of the contacts 23.

Im Zustand, in dem die Kontaktelemente 19a die eingangsseitigen Stromschienen 24 kontaktieren, bleibt die Schutzplatte 49a geöffnet und wird erst beim Zurückfahren der Kontaktelemente 19a (sobald die Kontaktelemente 19a die Durchtrittsöffnungen 54, 55 passiert haben) durch das Betätigungsmittel 64 wieder zwangsgeführt geschlossen.In the state in which the contact elements 19a contact the input-side busbars 24, the protective plate 49a remains open and only when the contact elements 19a are retracted (as soon as the contact elements 19a have passed through the through-openings 54, 55) are closed by the actuating means 64 again.

Beim Herausziehen der elektrischen Einschubeinheit 4 aus ihrer Endposition im Einschubfach 3 übernimmt dann wieder das am Einschubfach 3 angebrachte Sperrmittel 58 (die zwei Sperrbleche 58a, 58b) die Funktion, die Schutzplatten 49a (den Shutter) geschlossen zu halten.When pulling out the electrical plug-in unit 4 from its final position in the insertion compartment 3 then takes over again attached to the insertion compartment 3 blocking means 58 (the two locking plates 58a, 58b) the function of holding the protective plates 49a (the shutter) closed.

Beim Einsatz der erfindungsgemäßen Schutzvorrichtung ist ein Berühren der eingangsseitigen Stromschienen 24 in Einschubfächern ohne Einschubeinheiten sicher verhindert, da eine Abdeckung der Stromschienen 24 durch die an der Abdeckung 44 gehaltenen, geschlossenen Schutzplatten 49a bis 49d vorliegt. Außerdem wird durch die Kombination aus dem am Einschubfach gehaltenen Sperrmittel 58 und dem an der Einschubeinheit gehaltenen Betätigungsmittel 64 eine jederzeit zwangsgeführte Lage der untersten Schutzplatte 49a realisiert. Dadurch, dass die unterste Schutzplatte 49a erst beim Verfahren der Kontakteinheiten 19, 20 aus der Trenn- in die Betriebsstellung geöffnet wird, ist sichergestellt, dass bei einer Störung im Stromschienenkanal der Stromverteilereinheit die Einschubeinheit 4 selbst abgeschottet ist und damit unversehrt bleibt.When using the protective device according to the invention a touching of the input side busbars 24 in slide-in compartments without plug-in units is reliably prevented because a cover of the busbars 24 is held by the cover 44 held on the closed protective plates 49a to 49d. In addition, by the combination of the locking means 58 held on the insertion compartment and the actuating means 64 held on the insertion unit, a force-guided at all times Position of the lowest protective plate 49a realized. The fact that the lowermost protective plate 49a is opened only when the contact units 19, 20 are moved out of the isolating position into the operating position ensures that the plug-in unit 4 itself is shielded off in the event of a fault in the busbar channel of the power distribution unit and thus remains intact.

Claims (9)

  1. Protection device for protecting against contact with electrical conductors (24) in a power distribution unit (1), wherein the power distribution unit (1) has an insertion bay (3) and an electrical withdrawable unit (4) which is movable in the insertion bay (3) from a starting position to an end position, comprising at least one protective plate (49a, 49b, 49c, 49d) which can be moved in the insertion bay (3) at right angles to the movement direction (43) of the electrical withdrawable unit (4) from a closed position to an open position and having an actuating means (64) retained on the electrical withdrawable unit (4) for the purpose of moving the protective plate (49a),
    characterised in that
    the actuating means (64) can be moved under the action of a control means on the withdrawable unit (4) from a starting position to an end position,
    wherein with the electrical withdrawable unit (4) located in its end position the actuating means (64) projects into the movement path of the protective plate (49a) in such a way that the protective plate (49a) can on the one hand be transferred from its closed position to its open position only when the actuating means (64) is transferred from its starting position to its end position and can on the other hand be transferred from its open position to its closed position only when the actuating means (64) is transferred from its end position to its starting position.
  2. Protection device according to claim 1,
    characterised in that
    a first interlock of the protective plate (49a) effected by means of a locking element (56) and/or a second interlock of the protective plate (49a) effected by a locking means (58) are provided,
    wherein the protective plate (49a) can be moved from the closed position to the open position only when the two interlocks are released.
  3. Protection device according to claim 2,
    characterised in that
    the locking element (56) is integrally formed on the protective plate (49a, 49b, 49c, 49d) and disposed opposite a stop (57) that is retained in a fixed position with respect to the insertion bay, wherein it is necessary to break out the locking element (56) in order to release the first interlock of the protective plate (49a, 49b, 49c, 49d).
  4. Protection device according to one of claims 2 or 3,
    characterised in that
    the locking means (58) is retained in a movable manner on the insertion bay (3) and in that it is necessary to transfer the locking means (58) from a locking position to a release position in order to release the second interlock of the protective plate (49a),
    wherein the locking means (58) projects into the movement path of the withdrawable unit (4) in such a way that it can be transferred from its locking position to its release position when the withdrawable unit (4) is transferred from its starting position to its end position.
  5. Power distribution unit (1) having an insertion bay (3), comprising an electrical withdrawable unit (4) which is movable in the insertion bay (3) from a starting position to an end position and having a protection device for protecting against contact with electrical conductors in the power distribution unit,
    characterised in that
    the protection device is embodied according to one of claims 1 to 4.
  6. Power distribution unit (1) according to claim 5,
    characterised in that
    the electrical withdrawable unit (4) has at least one contact unit (19) which can be moved from a break position to a contact position,
    wherein a cross slide (36) serving to move the contact unit (19) forms the control means acting on the actuating means (64).
  7. Power distribution unit according to one of claims 5 or 6,
    characterised in that
    a cover (44) permanently fixed to the insertion bay (3) is provided on which the protective plate (49a, 49b, 49c, 49d) is captively retained and movably guided when the interlocks are released.
  8. Power distribution unit according to claim 7,
    characterised in that
    the protective plate (49a, 49b, 49c, 49d) is provided with first pass-through openings (54) and the cover (44) is provided with associated second pass-through openings (55), wherein with the protective plate located in its open position the pass-through openings (54) of the protective plate (49a, 49b, 49c, 49d) are arranged in alignment with the associated pass-through openings of the cover in order to allow the passage of movable contact elements (19a) of the contact unit (19).
  9. Power distribution unit (1) according to one of claims 5 to 8,
    characterised in that
    a plurality of protective plates (49a, 49b, 49c, 49d) are disposed on the cover (44) in a predefined grid arrangement.
EP08846356.7A 2007-11-09 2008-10-24 Protection device for protecting against contact with electrical lines in a power distributing unit Active EP2208269B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007054295A DE102007054295A1 (en) 2007-11-09 2007-11-09 Protection device against touching electrical conductors in a power distribution unit
PCT/EP2008/064453 WO2009059905A1 (en) 2007-11-09 2008-10-24 Protection device for protecting against contact with electrical lines in a power distributing unit

Publications (2)

Publication Number Publication Date
EP2208269A1 EP2208269A1 (en) 2010-07-21
EP2208269B1 true EP2208269B1 (en) 2013-10-02

Family

ID=40408067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08846356.7A Active EP2208269B1 (en) 2007-11-09 2008-10-24 Protection device for protecting against contact with electrical lines in a power distributing unit

Country Status (3)

Country Link
EP (1) EP2208269B1 (en)
DE (1) DE102007054295A1 (en)
WO (1) WO2009059905A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008020753A1 (en) * 2008-04-18 2009-10-22 Siemens Aktiengesellschaft Protection device against touching electrical conductors in a power distribution unit
DE202008005752U1 (en) * 2008-04-18 2008-07-10 Siemens Aktiengesellschaft Power Distribution Unit
DE102010041829A1 (en) 2010-09-30 2012-04-05 Siemens Aktiengesellschaft Load feeder for a power distribution unit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1584623A (en) * 1920-04-23 1926-05-11 Westinghouse Electric & Mfg Co Switchboard
BE757024A (en) * 1969-10-16 1971-04-05 Alsthom Cgee DEVICE FOR PLUG-OUT EQUIPMENT
DE3544667A1 (en) * 1985-12-13 1987-06-19 Siemens Ag SLIDE FRAME WITH A PROTECTIVE PLATE FOR A DISCONNECTING ARRANGEMENT
DE9005066U1 (en) * 1990-05-04 1991-09-05 Klöckner-Moeller GmbH, 5300 Bonn Device for isolating live parts in plug-in distributors
JP2755049B2 (en) 1992-06-30 1998-05-20 三菱電機株式会社 Safety shutter device for draw-out circuit breaker
US6414839B1 (en) * 2000-09-29 2002-07-02 Siemens Energy & Automation Shutter mechanism for vertical bus of motor control center
DE10106272C1 (en) * 2001-02-01 2002-07-04 Siemens Ag Electrical energy distribution system has electrical connection with earthed components during fitting and removal of electrical device supply insert
DE10120750C1 (en) * 2001-04-23 2002-07-11 Siemens Ag Physical contact protection device for plug-in switch frame has sliding protection plate and operating mechanism provided by spring blade hook
DE102005026388B3 (en) 2005-06-02 2007-01-04 Siemens Ag Contact configuration
US7348505B2 (en) * 2005-12-21 2008-03-25 General Electric Company Shutter locking system for draw-out circuit breakers and method of assembly thereof

Also Published As

Publication number Publication date
WO2009059905A1 (en) 2009-05-14
DE102007054295A1 (en) 2009-05-14
EP2208269A1 (en) 2010-07-21

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